Die-separating means



Sept. 29, 1925. 1,555,733

R. L. WILCOX DIE SEPARAIING MEANS Filed Oct. 51, 1921 Patented Sept. 29,1925.

RIGHARD- LESTiER" wILcoX, or WATERBURY," commonest} renames To *rH-nWATERBURY BARREL FQUNDRY'ANFMMHINEooIvrrAnY; or WAT-smile c'oiaNEGTIGUT, A consort-Arron cor mn-snrana'rms MEANS.

Application filed October 31, 1921. Serial Nb. 511,805.

To cgZZcv/rom it" may concern Be it known that I, RICHARD 'Lns'rnn"W11;-

ooX, a'*citizen of theUiiited State's, residing at lvaterhury, in'ithe'county" of' New Haven and State of Connecticut; have invented certainnew and, useful linprovelnents in Die'Sepa'rating Means, of Whiclrthe'fol lowing is a. specification, rei'er'ence being had therein to theaccompanying drawings.

My invention relates to die separating means; its prin'cipal object beinto" pro vi'de'siinple mechanism for separating the dies of an-open dieheader or upsetting machine:

Among other aims and objects of my; in V6I1t1011 he recited" the"provision of a device ofthe character mentioned with a View thcompactness and in which the numher of parts are few, the construction811111316, the c'ost of production small," and efficiency andoperationhighi-' a The improvements in the details and arrangament ofparts Will lee-apparent from aninspection of the" accompanying drawings,in -connectioir with the description here iria fter contained,andWh-ere'in anemnodt merit of" theinventioh is disclosed for thepurpose of 'impa rting a" full understanding ofthe same? I Having moreparticular reference to the drawings and in connection withwhich likereferencecharacters refer to' corresponding parts in the several figuresFigure 1 is a front elevation of a pair of'dies' for" a heading machineor the like with a portion of the supportlng mechanism thereforandWith'fniy improved sepmating means connectedtherewith;

Figure 2 1sttransversesecnonal V16W thereof taken 1 generallyupon line2-2" of" Figure 1; p Figure 3"is a persp ectlvewlew of the cam loloc'k iand l Figiire' '4 1s" a from; elevation of a pair of dies, similar toF1gure1, With theseparating mechanlsin apphed to the underside thereof.

It has-heretofore been the practice to separate the dies of an opendieheader or upsetting machine atthewire feedline by partingpins,separating pinsor the like, an illustration of such means beingshown in Letters Patent {N'ol 1,104,090, dated July 21, 191 1particularly in Figure 1- thereof, and alsoiin 'lietters Patent No.1,108,958, dated September 1,1914, a heavy fiat spring-not hown ineither of the above patents, bear mg upontheupper end of each of the"part in'g pins or sep'aratin x pins, .Which move in a'pathstatesmen-L115; a right angle to the movement of the dies. lVith suchmech anism the die cap or other part or parts that support the pins mustbe machined with gr-eat care and exactness and each must be incorrectalignment With each other and the groove formed by the angular cornerfaces of the dles, When the dies are in proximity to the Wire feed line.If the pins are not so arranged, the lower pointed end thereof will notregisterl with said groove,- thus having a tendency w cramp the dies andapply" an unequal pressure thereto 'atdfiferent points" throughout theirlength. If this occurs, the dies may be separated mo'r'ea-t one end thanat theother,

and if perchance themin imuin separation is at'the' in'n'erfend' ofthodies-a defective feedof' the Wire'r'esults' and the endof the Wire'mayabut against" the dies and stop the teed-e With the use' ofsuch'pinsthespring resMS sare'upon'the end thereohis'constant, t1erefore it requires"not only; a pressure sufii'cient to move thefdies and cut off the wirebut alsoto resist the pressure of the pin actiiatin'g springs, whichpressure is constant" upon the 'top-o'f'on'e of 'the'di'es duringlitsentire movement. There is no use for thisfpressure except when the dies:are to1be'--sepa rated at'theywirefed'line, hence more power isnecessarily required to actuate the dies.

l l liile"'1nore powerna mechanismis required to move the dies fromthewire feed line to the upsetting line, the dies are usually returnedby spring pressure, the strength the heretofore"conventional method forseparating the dies are obviated in my im proveddevloe, which occupiesthe minimum amount of not otherwise required space, pressure is appliedonly when the dies are to be separated, the necessity of line machm-'ing of the parts is entirely eliminated, and in these, and many otherways, produces results that are advantageous and insure certainty andelliciency in operation, and with mechanism that is of comparativelysimple design. 7

Having more particular reference to the drawings, numerals 10 and 11represent the dies, which are of the usual form with corner angularfaces 12 which unite to form a V shaped groove substantially as shown inFigures 1 and 1, wherein the dies are near the wire feed line, thisbeing coincident with the line 22 of Figure 1. A. piece of wiredesignated 13 is shown in section at this feed line.

' feed line to the upsetting line the dies are positively actuated byrelatively powerful mechanism to cut off a piece of the wire rod but areusually returned from the upsetting line by spring mechanism.

Referring now particularly to Figures 1 and 2, there is associated withthe cover 15 a cam plate 16 which is preferably dovetailed therein andhaving a cam face 17 thereon which inclines downwardly from thedirection of the upsetting line toward the wire feed line. The use ofthis cam plate as shown is not necessary to the successful op-,

eration of the machine, nor the means for mounting the same in thecover, because the cam face may be formed upon the cover itself or maybe secured in any other convenient manner.

The cam block 18 has two faces 19 which meet at their lower ends and arein substantially the same angular relation to each other as the faces 12of the dies and a cam face 20, which has substantially the same angle asthe cam face 17.

This cam block is mounted so that the meeting faces 19 point downwardlyand rest against two of the faces 12 of the dies substantially as shownin Figure 1 with the cam face 20 thereon in contact with the cam face17, when the dies are at-the wire feed line, at which time the dies areseparated slightly so as to permit the incoming wire to passtherebetween. hen the dies move from the wire feed line to the upsettingline the cam block 18 travels therewith, and the space, pressure is onlyapplied when required, that is, when the dies are at ornear the wirefeed line, and in these and other ways the objections to themechanismsheretofore commonly utilized for separating the dies areeliminated and many obvious advantages secured.

I have shown in Figures 1 and 2 my improved mechanism as applied to thetop side of the dies but obviously it will operate equally as well ifapplied to the underside thereof as shown in Figure 4:, or if desired,it may be used upon both top and bottom. If used upon the bottom, thecam plate 16 is mounted in the bed plate 1 1 instead of the cap 15*, andthe cam face 20 will remain in contact with the fixed cam face 17instead of moving away from it as when used upon the top of the dies.Otherwise the construction and operation of the mechanism is the same aswhen the cam plate is above the dies.

There are minor changes and alterations that can be made within myinvention, aside from those herein suggested, and I would therefore haveit understood that I do not limit myself to the exact constructionherein shown and described, but claim all that falls fairly within thespirit and scope of the appended claims. I

Having described my invention, what I claim as new and desire to secureby Letters Patent, is:

1. In combination with the dies of a heading machine or the like, ofmeans, for separating the dies,'wherein each die has a face thereon thatco-operates with a similar face upon another die to form a groove whenthe dies are in operative relation to each other; a block having angularfaces thereon that move with the dies. and project into said groove whenthe dies are substantially in line with the wire feed line; and a parthaving a cam face thereon in the path of movement of said block when thesame is substantially in register with the wire feed line.

2. In combination with the dies of a heading machine or the like, ofmeans, for separating the dies, wherein each die has a face thereon thatco-operates with a similar face upon another die to form a groove whenthe dies are in operative relation to eachother; a part having a camface; and a non-rotat able block that projects into said groove andhaving contact with said cam face When the dies are substantially inline with the wire feed line.

3. In combination with the dies of a heading machine or the like, ofmeans, for separating the dies, wherein each die has a face thereon thatco-operates with a similar face upon another die to form a groove Whenthe 10 dies are in operative relation to each other;

a part having a cam face; and a non-rotatable block that projects intosaid groove and having contact with said cam face when the dies aresubstantially in line With the Wire feed line, said cam being formed soas to prevent endWise movement of the block.

In testimony whereof, I have hereunto affixed my signature.

RICHARD LESTER WVILCOX.

